John osborne christian



gist-:5 gutsntgffirto JOHN. OSBORNE CHRIST-IAN, OF MANCHESTER, AIfID JOHN GHA-R'LTONAND HENRY 'OHARLTUVN, or STttANGEWAYS,ENGLAND,

Letters Paten t No. 68,955,.dated September 17; 1867} antedzrted September- 1?;1866.

t is IMPR VE ENT m THE IlIANiJP-AGTUBE or monnsrou,

TO ALL WHOM IT MAY CONCERN Be it known thotqwe, JOHN Osguich Cnnrsrrlin, ofllisneh'estor, EngIandQJoBNQCH RLTon aoglHsxnr sf' Gammon, of Strongeways, Englandfiaw invented'a. new and useful Improvement in Treeting'sn d Producing Compounds of Magnesium; and we do hereb'y'deolure that the following is a. fullfclear; and e xoot'desc'ription 7 thereof, which will enable others skilled-in the art to 'fullyunderston'd and ma ks use of-thosnme;

' This invention relates, first; in pr'oducing sulphate of magnesi ujor other-salts of ih c'gn'esia during he process of generating carbonic acid gas, as'practised, for instance, in the inanufucture ofsoda-Water and artificial v i i mineral-waters, or during the 'process of distilling tar-rotor, and of manufacturing ammonia or its salts from 7 any of the saltsof imimonia, by substituting for carbonate of lime thecarbonat-e of mignesia or Dolo mitefl b era; carbonate'of 'rnagnesicor'mognesite combined :witli uny other cuhbonute. lt consists also in treoting l Dolomite brother magnesiun compounds; eith'orin amget or dry state, with sulohuretted hydrogen gas, so as to produce sulphate of magnesia or other valuable inagnesion residue, which can be" advantageously used for? the manufacture of sulphote or other compounds of mngnesiur I i l i In the usual process of, genemtifigcurhpnic-acid gas, for. aei'oting u'aters or fonother purposesfciu-honhte of lime or common marble is used, and by treating this marble with sulphuric acid 'the curbonic acid is driven out and residuum is left of no practical value. Insteud of the carbonate-of lime we employ carbonate of-mugf nesia. or other salts of magnesia, and by these menus-we obtain es residue sulphate or other com pounds of meg nesia, which can he used for v'arioumpui-poses, i i i i The same result is obtained bysub stituti'ng magnesia or mngnesieu compoundsfor lime in the process of distilling tar-water, ondin the menui'actui'ejof oinmbnia. or its 'snltsi'rom any of-the salts of ammonia-{leaving} i v valuable uiagnesiau compounds as residue. l

i Sulphate of magnesia or other valuable mngnesion r'esidue is alsoohtaind by fpcssing sulplmrettedhydrogen through Dolomite? or calcined Dolomite or other ningnesiancompounds, either .in n wet or dry state, v

which will leave'a residue valua -ble for the manufacture of sulphato or pth'ercompoundsof magnesiaL- i What we claim as our invention and desire to secure by Letters Patent of the United States ofrAmericii, i:s- 4 V 1.- Producing sulphate of magnesia or other saltsofuiognesis' during the process of'generuting carbonic acid gas or ofdistilling tar-water or of'manufacturing uuimonia. or its salts, substantially its: herein set forth.

2. Treating Dolomite or other nugnesian colhpounds w ithsulphuretted hydrogen ,substontially'as and for the purpose described. 1 r i i i i V JOHN OSBORNE CHRISTIAN;

v r JOHN CHARLTON; Witnesses: r I HENRY CHARLTON. Y

ALBERT E.- .OVEIBELL, Y i Luwrs SARGEANT. 

